title: Comparison of a laboratory-developed RT-PCR and the CDC RT-PCR protocol with rapid immunodiagnostic testing during the 2009 H1N1 influenza A pandemic.
abstract: We evaluated the performance of a laboratory-developed multiplex real-time reverse transcription-PCR assay (LDT rRT-PCR), the Centers for Disease Control and Prevention (CDC) 2009 H1N1 rRT-PCR protocol using the LightCycler 480 II, the multiplex xTAG Respiratory Virus Panel (xTAG RVP), and rapid immunodiagnostic testing (RIDT) using the BinaxNOW Influenza A & B to detect 2009 H1N1 with 426 nasopharyngeal swab specimens during the 2009 H1N1 pandemic. The specificity of the methods tested was ≥98%, and the individual test sensitivities were RIDT at 42.3% [95% confidence interval (CI), 31.4-54.0], LDT rRT-PCR at 98.9% (95% CI, 92.9-99.9), CDC 2009 H1N1 rRT-PCR at 78.2% (95% CI, 67.8-86.0), and xTAG RVP at 93.1% (95% CI, 85.0-97.2). A negative RIDT result should not be used to make decisions with respect to treatment or infection prevention. rRT-PCR is the preferred first-line diagnostic test for detecting 2009 H1N1 influenza A.
authors.affiliation: PeaceHealth Laboratories, 123 International Way, Springfield, OR 97477, USA. rliao@peacehealth.org
authors.forename: Robert Steven
authors.initials: RS
authors.lastname: Liao
authors.forename: Olfert
authors.initials: O
authors.lastname: Landt
authors.forename: Joseph Thaddeus
authors.initials: JT
authors.lastname: Hill
mesh_terms: D000328:Adult; D002487:Centers for Disease Control and Prevention, U.S.; D019411:Clinical Laboratory Techniques / Q000379:methods*; D006801:Humans; D007118:Immunoassay / Q000379:methods; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification*; D007251:Influenza, Human / Q000175:diagnosis* / Q000821:virology; D009305:Nasopharynx / Q000821:virology; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods*; D012680:Sensitivity and Specificity; D014481:United States; D014773:Virology / Q000379:methods*